KR100747367B1 - Light emitting device - Google Patents

Abstract

A light emitting device is provided to prevent the deterioration of the device by protecting the device through a protecting unit and forming a getter in the device. A light emitting device includes a substrate(202), a plurality of light emitting units, a plurality of separators(208), and a protecting unit(216). The plurality of light emitting units are formed on the substrate(202), and have first electrodes(204), light emitting layers(210), and second electrodes(212). The plurality of separators(208) divide the light emitting unit by each scan line. The protecting unit(216) is bonded with the substrate(202) to seal the substrate(202). The protecting unit(216) includes grooves(216b2,216b3,216b4,216b5) which are placed on an inner surface(A1,A2,A3,A4) thereof and correspond to the separators(208).

Description

Electroluminescent Device {Light Emitting Device}

1 is a cross-sectional view showing a conventional passive matrix electroluminescent device.

2 is a cross-sectional view of a passive matrix electroluminescent device with a protection unit according to a first embodiment of the present invention.

3 is a cross-sectional view of a passive matrix electroluminescent device with a protection unit according to a second embodiment of the present invention.

4 is a cross-sectional view of a passive matrix electroluminescent device with a protection unit according to a third embodiment of the present invention.

5 is a cross-sectional view of a passive matrix electroluminescent device with a protection unit according to a fourth embodiment of the present invention.

6 is a cross-sectional view of a passive matrix electroluminescent device with a protection unit according to a fifth embodiment of the present invention.

7 is a cross-sectional view of a passive matrix electroluminescent device with a protection unit according to a sixth embodiment of the present invention.

* Description of the main parts of the drawings *

200, 300, 400, 500, 600, 700: EL device

202, 302, 402, 502, 602, 702: substrate

204, 304, 404, 504, 604, 704: first electrode

206, 306, 406, 506, 606, 706: insulating film

208, 308, 408, 508, 608, 708: bulkhead

210, 310, 410, 510, 610, 710: light emitting layer

212, 312, 412, 512, 612, 712: second electrode

Getter: 214, 314, 414, 514, 614, 714

216, 316, 416, 516, 616, 716: protection unit

The present invention relates to an electroluminescent device.

Electroluminescent devices are one of the technical fields that are actively researched among flat panel display devices because they are capable of emitting light of various colors, are easily thinned and patterned, have a low DC driving voltage and high luminous efficiency.

In particular, the organic electroluminescent device includes an organic light emitting layer between the anode and the cathode so that holes supplied from the anode and electrons received from the cathode combine in the organic light emitting layer to form an exciton, a hole-electron pair, and then the exciton is bottomed. The light emitted by the energy generated when returning to the state.

The organic EL device is classified into a passive matrix organic light emitting device (PMOLED) and an active matrix organic light emitting device (AMOLED) according to a driving method.

Such a passive matrix organic light emitting device (PMOLED) and an active matrix organic light emitting device (AMOLED) have a deteriorated light emitting layer when exposed to oxygen or moisture. As a result, the lifetime and reliability of the device can be reduced.

Therefore, the inside of the device is protected by a protective part such as a metal cap or a glass cap, and a moisture absorbent such as a getter is formed inside the device to prevent deterioration of the device.

As described above, the conventional passive matrix organic electroluminescent device and the active matrix organic electroluminescent device have a phenomenon in which the protection part is pressed when the external pressure is applied.

Accordingly, the conventional passive matrix organic electroluminescent device and the active matrix organic electroluminescent device have caused damage to the devices therein.

In particular, the passive matrix organic electroluminescent device has a greater damage than the active matrix organic electroluminescent device because partitions are formed therein.

Looking at the passive matrix organic electroluminescent device in detail as shown in FIG.

1 is a cross-sectional view showing a conventional passive matrix type EL device.

Referring to FIG. 1, the conventional passive matrix type electroluminescent device 100 includes an anode 104, an insulating film 106, a partition 108, a light emitting layer 110, a cathode 112, and a getter on a substrate 102. 114, a protection unit 116 is formed.

As described above, when the conventional EL device 100 receives pressure from the outside, the protection unit 116 is pressed.

At this time, since the gap between the protection unit 116 and the partition wall 108 is located relatively close, the particles of the cathode 112 formed on the partition wall 108 when the protection unit 116 and the cathode 112 contact. Since particles may penetrate into the light emitting unit, a line fail of the cathode 112 may occur.

In particular, when the protection portion 116 formed of the metal cap is electrically contacted with the cathode 112 inside the light emitting portion by particles of the cathode 112 formed on the partition 108, a short circuit occurs. There was a problem that occurred.

As a result, since dark spots of the electroluminescent device 100 are generated, there is a problem that the quality of the screen is lowered and the reliability is lowered.

Accordingly, an object of the present invention is to provide an electroluminescent device capable of improving the quality of the screen and improving the reliability of the electroluminescent device.

The present invention and the substrate to achieve this object; A plurality of light emitting parts formed on the substrate and including a first electrode, a light emitting layer, and a second electrode; A plurality of partitions for dividing the light emitting portion for each scan line; A protective part is bonded to the substrate and seals the substrate, wherein the protective part is provided on the inner surface of the protective part and includes an electroluminescent device including a groove corresponding to the partition wall.

According to another feature of the invention, the protection unit is characterized in that the inclined upward toward the central area of the substrate with respect to one surface bonded to the substrate.

According to another feature of the invention, the protector further comprises a getter groove located in the central region of the protector, the getter groove includes a getter.
According to another feature of the invention, the getter groove is characterized in that it protrudes in the outward direction of the protection.

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According to another feature of the invention, the substrate; A plurality of light emitting parts formed on the substrate and including a first electrode, a light emitting layer, and a second electrode; A plurality of partitions for dividing the light emitting portion for each scan line; A protective part is bonded to the substrate and seals the substrate, wherein the protective part protrudes to an outer surface of the protective part and provides an electroluminescent device including a protruding region corresponding to the partition wall.

According to another feature of the invention, the protection portion is characterized in that the inclined upward toward the central region of the substrate with respect to one surface bonded to the substrate.

According to another feature of the invention, the getter region further comprises a getter region located in the central region of the protector, the getter region includes the getter.
According to another feature of the invention, the getter region is characterized in that it protrudes in the outward direction of the protection.

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According to another feature of the invention, the protection is characterized in that the metal cap or glass cap.

According to another feature of the invention, the first electrode is characterized in that the anode.

According to another feature of the invention, the light emitting layer is characterized in that the organic material.

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention in more detail.

<First Embodiment>

2 is a cross-sectional view of a passive matrix electroluminescent device with a protection unit according to a first embodiment of the present invention.

Referring to FIG. 2, the electroluminescent device 200 according to the first embodiment of the present invention is formed on the substrate 202 with a plurality of first electrodes 204 spaced apart from each other at predetermined intervals.

In this case, the first electrode 204 is an anode, but the present invention is not limited thereto and may be a cathode.

In addition, an insulating film 206 is formed on the first electrode 204.

The insulating film 206 is formed to insulate between the first electrodes 204, and has an open portion P to expose the first electrode 204 to a portion of the insulating film 206.

The light emitting layer 210 and the second electrode 212 made of an organic compound are sequentially formed in the open portion P ₁ of the insulating film 206. In this case, the second electrode 212 is a cathode, but the present invention is not limited thereto and may be an anode.

Here, although not shown, the light emitting layer 210 and the second electrode 212 are formed in the open part P ₁ so that pixels are separated using a shadow mask (not shown).

When the electroluminescent device 200 is exposed to oxygen or moisture, the light emitting layer 210 may be deteriorated to reduce the lifetime and reliability of the device.

Therefore, the inside of the device is protected by the metal cap, which is the protection unit 216, and a moisture absorbent such as the getter 214 is formed inside the device to prevent deterioration of the device.

The protection part 216 according to the first embodiment of the present invention includes a first surface 216a bonded to the substrate 202, a first electrode 204, a light emitting layer 210, and a second electrode 212. And a second surface 216b facing the light emitting portion 213.
The protection part 216 according to the first embodiment of the present invention is located on the inner surface A ₁ , A ₂ , A ₃ , A ₄ of the protection part 216 and corresponds to the groove 216b ₂ , 216b corresponding to the partition wall 208. _3, includes a 216b _4, 216b _5). It may also include a getter groove 216b ₁ positioned in the protection unit 216.
The grooves 216b ₂ , 216b ₃ , 216b ₄ , 216b ₅ are grooves recessed into the inner surfaces A ₁ , A ₂ , A ₃ , A ₄ of the protection part 216, and the getter grooves 216b ₁ are protection parts. Located in the central region of 216 is a getter groove 216b ₁ in which an absorbent such as getter 214 is formed.

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Here, the second groove _{(216b 2, 216b 3, 216b} 4, 216b 5) is formed at a portion (A _1, A ₂₎ close to the getter groove (216b ₁₎ or the getter groove (216b ₁₎ of the surface (216b) It is formed in the outer part (A ₃ , A ₄ ) outside the.

Accordingly, the grooves 216b ₂ , 216b ₃ , 216b ₄ , 216b ₅ are selectively formed among the inner surfaces A ₁ , A ₂ , A ₃ , A _{4 of} the second surface 216b corresponding to the partition 208. It becomes possible.

Here, the protective part 216 is made of a metal cap, the metal cap is a getter groove as well as the grooves (216b ₂ , 216b ₃ , 216b ₄ , 216b ₅ ) using a predetermined press means (not shown) or injection molding process. 216b ₁ may form.

On the other hand, the grooves 216b ₂ , 216b ₃ , 216b ₄ , and 216b ₅ have the second electrode 212 formed on the protection part 216 and the partition wall 208 when the protection part 216 receives pressure from the outside. It is possible to reduce the contact.

In particular, in the case of the groove (216b _2, 216b ₃₎ formed in a portion (A _1, A ₂₎ close to the getter groove getter groove (216b ₁₎ is located in the central area, so receive more of the external pressure, the groove (216b _2, The deeper the depth of 216b ₃ ), the more efficient it is.

The electroluminescent device 200 according to the first embodiment of the present invention can prevent the short circuit caused by particles between the protection unit 216 and the second electrode 212, It is possible to prevent the line fail of the second electrode 212 from occurring.

As a result, dark spots do not occur in the electroluminescent device, and the quality of the screen can be improved, thereby improving reliability.

Second Embodiment

3 is a cross-sectional view of a passive matrix electroluminescent device with a protection unit according to a second embodiment of the present invention.

Referring to FIG. 3, the electroluminescent device 300 according to the second embodiment of the present invention may include the first electrode 304 on the substrate 302 in the same manner as the electroluminescent device 200 according to the first embodiment. The insulating film 306, the light emitting layer 310, the second electrode 312, the getter 314, the protective part 316, and the like are formed.

The protection part 316 according to the second embodiment of the present invention includes a first surface 316a bonded to the substrate 302, a first electrode 304, a light emitting layer 310, and a second electrode 312. And a second surface 316b facing the light emitting portion 313.
The protection part 316 according to the second embodiment of the present invention includes protruding regions 316b ₂ , 316b ₃ , 316b ₄ , and 316b ₅ protruding to the outer side of the protection part 316 and corresponding to the partition wall 308. do. In addition, the apparatus may further include a getter region 316b ₁ in which a moisture absorbent such as the getter 314 is formed.

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The protruding regions 316b ₂ , 316b ₃ , 316b ₄ , and 316b ₅ are formed in the portions B ₁ and B ₂ adjacent to the getter region 316b ₁ to which the getter is attached or outside the getter region 316b ₁ . It is formed in (B ₃ , B ₄ ).

Thus, the protruding regions 316b ₂ , 316b ₃ , 316b ₄ , 316b ₅ are selectively formed in the portions B ₁ , B ₂ , B ₃ , B _{4 of} the second side 316b corresponding to the partition 308. It becomes possible.

Here, the protective part 316 is made of a metal cap, the metal cap is a getter region 316b ₁ as well as the protruding regions 316b ₂ , 316b ₃ , 316b using a predetermined press means (not shown) or an injection molding process. ₄ , 316b ₅ ) can be formed.

The protruding regions 316b ₂ , 316b ₃ , 316b ₄ , and 316b ₅ have the second electrode 312 formed on the protective part 316 and the partition 308 when the protective part 316 is pressurized from the outside. It is possible to reduce this contact.

In particular, the protruding regions 316b ₂ and 316b ₃ formed in the getter region 316b ₁ and the adjacent portions B ₁ and B ₂ located in the central region are subjected to more external pressure, and thus the protruding regions 316b ₂ and 316b. The more protruding from the shape of ₃ ), the more efficient it is.

The electroluminescent device 300 according to the second embodiment of the present invention is the same as the electroluminescent device 200 according to the first embodiment of the particle (particle) between the protection unit 316 and the second electrode 312 It is possible to prevent the occurrence of a short circuit by the short circuit and to prevent the line fail of the second electrode 312 from occurring.

As a result, dark spots do not occur in the electroluminescent device, and the quality of the screen can be improved, thereby improving reliability.

Third Embodiment

4 is a cross-sectional view of a passive matrix electroluminescent device with a protection unit according to a third embodiment of the present invention.

Referring to FIG. 4, the electroluminescent device 400 according to the third exemplary embodiment of the present invention has a first electrode on the substrate 402 in the same manner as the electroluminescent devices 200 and 300 according to the first and second exemplary embodiments. The 404, the insulating film 406, the light emitting layer 410, the second electrode 412, the getter 414, the protective part 416, and the like are formed.

The protection part 416 according to the third embodiment of the present invention includes a first surface 416a bonded to the substrate 402, a first electrode 404, a light emitting layer 410, and a second electrode 412. And a second surface 416b facing the light emitting portion 413.

The protection part 416 according to the third embodiment of the present invention has a groove 416b ₂ , 416b corresponding to the partition wall 408 on the inner surfaces C ₁ , C ₂ , C ₃ , C ₄ of the second surface 416b. ₃ , 416b ₄ , 416b ₅ ). The apparatus may further include a getter groove 416b ₁ in which an absorbent such as the getter 414 is formed.

Meanwhile, the protection part 416 is formed to be inclined upward toward the center area of the substrate 402, that is, the getter groove 416b ₁ , with respect to the first surface 416a.

A second groove surface _{(416b) (416b 2, 416b} 3, 416b 4, 416b 5) is formed on a portion (C _1, C ₂₎ adjacent to the getter groove getter groove (416b ₁₎ or the getter groove (416b ₁₎ It is formed in the outer part (C ₃ , C ₄ ) outside the.

Thus, the grooves 416b ₂ , 416b ₃ , 416b ₄ , 416b ₅ are selectively formed in the inner surfaces C ₁ , C ₂ , C ₃ , C _{4 of} the second face 416b corresponding to the partition 408. It becomes possible.

Here, the protective part 416 is made of a metal cap, the metal cap is a groove (416b ₂ , 416b ₃ , 416b ₄ , 416b ₅ ) as well as the groove (by using a predetermined press means (not shown) or injection molding process) 416b ₁ ) may be formed.

The grooves 416b ₂ , 416b ₃ , 416b ₄ , and 416b ₅ have a second electrode 412 formed on the protection part 416 and the partition wall 408 when the protection part 416 is pressurized from the outside. It is possible to reduce the contact.

In particular, the grooves 416b ₂ and 416b ₃ formed in the getter grooves 416b ₁ and the adjacent portions C ₁ and C ₂ located in the central region are subjected to more external pressure, so the grooves 416b ₂ and 416b ₃ ). The deeper the depth, the more efficient it is.

The electroluminescent device 400 according to the first embodiment of the present invention is the same as the electroluminescent device 200 and 300 according to the first and second embodiments, between the protection unit 416 and the second electrode 412. Short circuits caused by particles can be prevented from occurring, and line fail of the second electrode 412 can be prevented from occurring.

As a result, dark spots do not occur in the electroluminescent device, and the quality of the screen can be improved, thereby improving reliability.

Fourth Embodiment

5 is a cross-sectional view of an electroluminescent device with a protection unit according to a fourth embodiment of the present invention.

Referring to FIG. 5, the electroluminescent device 500 according to the fourth embodiment of the present invention is disposed on the substrate 502 in the same manner as the electroluminescent devices 200, 300, and 400 according to the first, second, and third embodiments. The first electrode 504, the insulating film 506, the light emitting layer 510, the second electrode 512, the getter 514, the protective part 516, and the like are formed on the substrate.

The protection part 516 according to the fourth embodiment of the present invention includes a first surface 516a bonded to the substrate 502, a first electrode 504, a light emitting layer 510, and a second electrode 512. And a second surface 516b facing the light emitting portion 513.

The protection part 516 according to the fourth embodiment of the present invention includes the protruding regions 516b ₂ , 516b ₃ , 516b ₄ , and 516b ₅ corresponding to the partition wall 508 formed on the substrate 502. In addition, the method may further include a getter region 516b ₁ in which a moisture absorbent such as the getter 514 is formed.

Meanwhile, the protection part 516 is formed to be inclined upward toward the center area of the substrate 502, that is, the getter area 516b ₁ , with respect to the first surface 516a.

In addition, the second projection area of the surface _{(516b) (516b 2, 516b} 3, 516b 4, 516b 5) is formed in a part (D _1, D ₂₎ adjacent to the getter area (516b ₁₎ or the getter area (516b ₁ Is formed in the outer part (D ₃ , D ₄ ) out of the).

Thus, the protruding regions 516b ₂ , 516b ₃ , 516b ₄ , 516b ₅ are selectively formed in the portions D ₁ , D ₂ , D ₃ , D ₄ of the partition 508 and the corresponding second surface 516b. It becomes possible.

Here, the protective part 516 is made of a metal cap, the metal cap is a getter as well as the protruding areas (516b ₂ , 516b ₃ , 516b ₄ , 516b ₅ ) using a predetermined press means (not shown) or injection molding process. Region 516b ₁ may be formed.

The protruding regions 516b ₂ , 516b ₃ , 516b ₄ , and 516b ₅ have a second electrode 512 formed on the protective part 516 and the partition wall 508 when the protective part 516 is pressurized from the outside. It is possible to reduce this contact.

In particular, the protruding regions 516b ₂ and 516b ₃ formed in the getter region 516b ₁ and the adjacent portions D ₁ and D ₂ located in the central region are subjected to more external pressure, and thus the protruding regions 516b ₂ and 516b. The more protruding from the shape of ₃ ), the more efficient it is.

The electroluminescent device 500 according to the fourth exemplary embodiment of the present invention has the protection unit 516 and the second electrode in the same manner as the electroluminescent devices 200, 300, and 400 according to the first, second, and third embodiments. It is possible to prevent the short circuit caused by the particles between the 512, and to prevent the line fail of the second electrode 512.

As a result, dark spots do not occur in the electroluminescent device, and the quality of the screen can be improved, thereby improving reliability.

Fifth Embodiment

6 is a cross-sectional view of a passive matrix electroluminescent device with a protection unit according to a fifth embodiment of the present invention.

Referring to FIG. 6, the electroluminescent device 600 according to the fifth embodiment of the present invention is the same substrate as the electroluminescent devices 200, 300, 400, and 500 according to the first, second, third, and fourth embodiments. The first electrode 604, the insulating film 606, the light emitting layer 610, the second electrode 612, the getter 614, the protective part 616, and the like are formed on the 602.

The protection part 616 according to the fifth embodiment of the present invention includes a first surface 616a bonded to the substrate 602, a first electrode 604, a light emitting layer 610, and a second electrode 612. And a second surface 616b facing the light emitting portion 613.

The protection part 616 according to the fifth embodiment of the present invention is inclined upwardly toward the center area of the substrate 602, that is, the getter area 616b ₁ , with respect to the second surface 616b about the first surface 616a. Is formed.

At this time, the second surface (616b) is a getter region without forming a groove on (616b _1), a moisture absorbent, such as a getter 614 is formed on the getter area (616b ₁₎ surface.

Here, the protruding regions 616b ₂ , 616b ₃ , 616b ₄ , and 616b ₅ corresponding to the partition wall 608 are formed on the inner surfaces E ₁ , E ₂ , E ₃ , and E _{4 of the second} surface 616b.

In addition, the protruding regions 616b ₂ , 616b ₃ , 616b ₄ , and 616b _{5 of} the second surface 616b are disposed at portions E ₁ and E ₂ adjacent to one surface of the protective part 616 in which the getter 614 is formed. It is formed on the outer portion (E ₃ , E ₄ ) formed or deviated from one surface of the protective portion 616 in which the getter 614 is formed.

Thus, the protruding regions 616b ₂ , 616b ₃ , 616b ₄ , 616b ₅ are selectively formed on the inner surfaces E ₁ , E ₂ , E ₃ , E _{4 of} the second face 616b corresponding to the partition 608. It becomes possible.

Here, the protective part 616 is made of a metal cap, the metal cap to form the protruding regions 616b ₂ , 616b ₃ , 616b ₄ , 616b ₅ by using a predetermined press means (not shown) or injection molding process. Can be.

The protruding regions 616b ₂ , 616b ₃ , 616b ₄ , and 616b ₅ have a second electrode 612 formed on the protective part 616 and the partition wall 608 when the protective part 616 is pressurized from the outside. It is possible to reduce this contact.

In particular, the protruding regions 616b ₂ and 616b ₃ formed on the portions E ₁ and E ₂ adjacent to one surface of the protection unit 616 positioned in the central region are subjected to more external pressure, so that the protruding regions 616b ₂ ,. The deeper the depth of 616b ₃ ), the more efficient it is.

The electroluminescent device 600 according to the fifth embodiment of the present invention is the protection unit 616 in the same manner as the electroluminescent device 200, 300, 400, 500 according to the first, second, third, fourth embodiment It is possible to prevent the short circuit caused by the particles between the electrode and the second electrode 612 and to prevent the line fail of the second electrode 612.

As a result, dark spots do not occur in the electroluminescent device, and the quality of the screen can be improved, thereby improving reliability.

Furthermore, in the electroluminescent device 600 according to the fifth embodiment of the present invention, the protector 616 is a getter than the electroluminescent devices 200, 300, 400, and 500 according to the first, second, third, and fourth embodiments. Since it is formed to be inclined without a groove, it is possible to further increase the strength of the protection unit 616 by the external pressure.

Sixth Embodiment

7 is a cross-sectional view of an electroluminescent device with a protection unit according to a sixth embodiment of the present invention.

Referring to FIG. 7, the electroluminescent device 700 according to the sixth embodiment of the present invention includes the electroluminescent devices 200, 300, 400, 500, and 600 according to the first, second, third, fourth, and fifth embodiments. Similarly, a first electrode 704, an insulating film 706, a light emitting layer 710, a second electrode 712, a getter 714, a protection part 716, and the like are formed on the substrate 702.

The protection part 716 according to the sixth embodiment of the present invention includes a first surface 716a bonded to the substrate 702, a first electrode 704, an emission layer 710, and a second electrode 712. And a second surface 716b facing the light emitting portion 713.

In the protective part 716 according to the sixth embodiment of the present invention, the second surface 716b is gradually moved toward the center area of the substrate 702, that is, the area where the getter 714 is located, with respect to the first surface 716a. It is formed obliquely upward.

At this time, the getter groove is not formed on the second surface 716b, and an absorbent such as the getter 714 is formed on one surface.

In addition, one or more protruding regions 716b ₂ , 716b ₃ , 716b ₄ , and 716b ₅ corresponding to the partition wall 708 are formed in the second surface 716b.

Here, the protruding regions 716b ₂ , 716b ₃ , 716b ₄ , and 716b _{5 of} the second surface 716b are adjacent to one surface F ₁ , F ₂ of one side of the protective part 716 in which the getter 714 is formed. It is formed on the outer portion (F ₃ , F ₄ ) that is formed or deviated from one surface of the protective part 716 in which the getter 714 is formed.

Thus, the protruding regions 716b ₂ , 716b ₃ , 716b ₄ , 716b ₅ are selectively formed in the portions F ₁ , F ₂ , F ₃ , F _{4 of} the second surface 716b corresponding to the partition 708. It becomes possible.

Here, the protective part 716 is made of a metal cap, the metal cap to form the protruding regions 716b ₂ , 716b ₃ , 716b ₄ , 716b ₅ by using a predetermined press means (not shown) or injection molding process. Can be.

The protruding regions 716b ₂ , 716b ₃ , 716b ₄ , and 716b ₅ have a second electrode 712 formed on the protective part 716 and the partition 708 when the protective part 716 is pressurized from the outside. It is possible to reduce this contact.

In particular, the protruding regions 716b ₂ and 716b ₃ formed on the portions F ₁ and F ₂ adjacent to one surface of the protection unit 716 located in the central region are subject to more external pressure, so that the protruding regions 716b ₂ ,. The more protruding the shape of 716b ₃ ) is, the more efficient it is.

The electroluminescent device 700 according to the sixth embodiment of the present invention is protected in the same manner as the electroluminescent devices 200, 300, 400, 500, and 600 according to the first, second, third, fourth, and fifth embodiments. It is possible to prevent a short circuit caused by particles between the portion 716 and the second electrode 712, and to prevent a line fail of the second electrode 712. It becomes the number.

As a result, dark spots do not occur in the electroluminescent device, and the quality of the screen can be improved, thereby improving reliability.

In addition, in the electroluminescent device 700 according to the sixth embodiment of the present invention, the protector 716 is a getter than the electroluminescent devices 200, 300, 400, and 500 according to the first, second, third, and fourth embodiments. Since it is formed to be inclined without a groove, it is possible to further increase the strength of the protection unit 716 by the external pressure.

In the above embodiment, it has been described that the protective part is made of a metal cap, but the present invention is not limited thereto, and the protective part may be made of a glass cap. In this case, the glass cap may form a groove or a protruding region by using a wet etching method.

Meanwhile, in the above embodiment, the groove or the protruding region is formed in the protective part of the passive matrix type EL device, but the present invention is not limited thereto. The groove or the protruding part of the active matrix type EL device is not limited thereto. Regions may also be formed. At this time, the groove or the protruding region of the protection portion is selectively formed in a portion of the protection portion corresponding to the partition wall.

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Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

The electroluminescent device of the present invention made as described above has the effect of improving the quality of the screen and the reliability of the electroluminescent device.

Claims (11)

A substrate; A plurality of light emitting parts formed on the substrate and including a first electrode, a light emitting layer, and a second electrode; A plurality of partitions for dividing the light emitting portion for each scan line; Including a protection unit for bonding the substrate and sealing the substrate, The protection unit is an electroluminescent device comprising a groove located on the inner surface of the protection unit corresponding to the partition wall. The method of claim 1, And the protection part is formed to be inclined upward toward a central area of the substrate with respect to one surface bonded to the substrate. The method according to claim 1 or 2, The protector further comprises a getter groove positioned in the central region of the protector, wherein the getter groove includes a getter. The method of claim 3, wherein The getter groove is protruded in the outward direction of the protection unit. A substrate; A plurality of light emitting parts formed on the substrate and including a first electrode, a light emitting layer, and a second electrode; A plurality of partitions for dividing the light emitting portion for each scan line; Including a protection unit for bonding the substrate and sealing the substrate, And the protection part protruding to an outer surface of the protection part and including a protruding region corresponding to the partition wall. The method of claim 5, And the protection part is formed to be inclined upward toward a central area of the substrate with respect to one surface bonded to the substrate. The method according to claim 5 or 6, And a getter region positioned in a central region of the protection unit, wherein the getter region includes a getter. The method of claim 7, wherein And the getter region protrudes in an outward direction of the protective part. The method according to claim 1 or 5, The protective part of the electroluminescent device, characterized in that the metal cap or glass cap. The method according to claim 1 or 5, The first electrode is an anode, characterized in that the anode. The method according to claim 1 or 5, The light emitting layer is an electroluminescent device, characterized in that the organic material.

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